I had similarly bad experiences when talking with Vampire players, btw. All they ever talked about was what kind of incredible powerhouse characters they had. Sometimes a bit of intrigue might be involved but never the slightest indication of the tragic side of being a vampire. Everyone seemed to enjoy being a blood-sucking monster.
Oh yes, LARP games especially seemed to be particularly rife with players that didn't like dealing with the tragic side of being a vampire. Chances are, you can tell if you're going to enjoy playing with a Vampire LARPer with a single question: ask them to describe their character. I can't count how many times I've done that only to hear something like, "Oh, my dude has Iron Will so he can ignore Dominate, and I've got intermediate Fortitude." My own longest-running LARP character was designed as a classic tragic hero: he was the last scion of an old-money family that was dying out, and when he became a vampire, any chances of renewing his family's strength and vitality were gone (although he could still accumulate wealth and temporal power, of course). Two of the storytellers told me that my character background was "depressing."
It's particularly frustrating in LARP because some people are just so dense that they actually try to have entire conversations as a social challenge. "I defend myself against the Prince's accusations with a social challenge. C'mon guys, it's in the rules, if I can beat the Prince in a social challenge you have to believe me."
Regarding Wraith - I fell in love with the rpg immediately but I also knew immediately I'd never find players who'd 'get it'. Plus, I'd rather play it than GM it.
As I've said before, Wraith is one of my favorite games ever. It does require skilled players who enjoy the concepts though. The game literally revolves around ghosts dealing with their psychological baggage from life. I think that a big part of it is that players don't necessarily enjoy getting their characters screwed over, which is at least half of what goes on in any given Wraith chronicle. It's moody, bleak, and can be very depressing when done "right." It usually takes me about six months to get a Wraith chronicle off the ground, but when it does, it's totally worth it.